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11. 发明专利

JPS5875364A TIME SERIES TYPE EXCLUSIVE LOGIC SYSTEM 失效
公开(公告)号：JPS5875364A
公开(公告)日：1983-05-07
申请号：JP17215581
申请日：1981-10-29
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE , NIPPON ELECTRIC CO , HITACHI LTD , FUJITSU LTD
发明人： SHIRAISHI OSAMU , HAGISHIMA KOUICHI , OONO MASAHIKO , OOTSUKI KANEICHI , YOSHINO HARUYUKI
IPC分类号： H04M19/00 , H04M19/02 , H04Q3/42
摘要： PURPOSE:To avoid driving of a control switch with the polarity inversion controlling signal which is wrong in terms of time series and to prevent a malfunction of a subscriber circuit, by forming a logical circuit with the call monitoring signal which monitors the state of subscribers and the polarity inversion controlling signal of a polarity inverting switch. CONSTITUTION:Current holding polarity inverting switches SW0-SW3 are connected between a call current supplying circuit BF and a telephone TEL. At the same time, the monitor signal SCN which is supplied from the circuit BF and monitors the state of subscribers is applied to a logical circuit element NOT1, and the control data D1-D3 which control the switches SW0-SW3 are applied to registers REG1-3. At the same time, the data D2 and D3 are fed to a logical circuit element OR1 via logical circuit elements NOT2 and 3 and an AND1. Then a logic is obtained between the control data and the signal SCN, and drivers DV1-3 are controlled via the registers REG1-3 to avoid driving of the switches SW0-SW3 with the polarity inversion controlling signals which are wrong in terms of time series.

12. 发明专利

JPS5680993A STATE MONITOR SYSTEM 失效
公开(公告)号：JPS5680993A
公开(公告)日：1981-07-02
申请号：JP15778279
申请日：1979-12-05
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YOSHINO HARUYUKI , USAMI TAKASHI , HASEGAWA KENZOU , USUDA SHIYOUGO , HAMASATO KAZUO , OIKAWA YOSHINORI
IPC分类号： H04Q3/72
摘要： PURPOSE:To monitor the loop state of a subscriber's line by detecting the across voltage of a capacitor by sending talking current to a telephone set by commutating the current of a DC power source and by smoothing the current through a capacitor input type filter. CONSTITUTION:Current from DC power source E is sent to commutation switch SW-C and reactance circuit Z and supplied as channel current Il to telephone set TEl by way of rectification switch SW-REC and low-pass filter. The across voltage of capacitor C of filter F is applied to voltage detecting circuit D. When the voltage of capacitor C is higher than a reference voltage, telephone set TEl is judged to be in the off-hook state and when not, it is judged to be in the on-hook state to turn on light emitting diode LED5, thereby sending a monitor signal to terminal SN.

13. 发明专利

JPS5637768A CALL CURRENT SUPPLY SYSTEM 失效
公开(公告)号：JPS5637768A
公开(公告)日：1981-04-11
申请号：JP11375279
申请日：1979-09-04
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YOSHINO HARUYUKI , USAMI TAKASHI , HASEGAWA KENZOU , USUDA SHIYOUGO , HAMASATO KAZUO , OIKAWA YOSHINORI
IPC分类号： H04M19/00 , H04M19/02
摘要： PURPOSE:To realize a call current supply system having a small amount of power consumption and a reduced packing space, by producing the bipolar rectangular wave through the commutation of the DC current supply with a certain frequency and then supplying this output to the load via the reactance circuit, the rectifying circuit and the LPF each. CONSTITUTION:The DC power supply E is converted into the bipolar rectangular wave of the frequency FS through the commutation switch SW-C and then rectified by the rectifying circuit REC and via the imaginary impedances IZX1 and X2 to be supplied to the telephone Tel via the line L and in the form of the DC Il after smoothing through the capacitor input and choke output type LPFs each. The IZX1 and X2 are formed by the serial connection between the capacitors C1/C2 and the inductances L1/L2. And no loss of the electric power is caused substantially since the IZ free from the resistance component is applied, and thus the power consumption is extremely small at the feeding circuit. Furthermore, the packing efficiency can be increased since the component parts are composed of the electronic parts.

14. 发明专利

JPS55133594A METHOD OF LONGITUDINALLY CONNECTING DIP TYPE ELECTRONIC PARTS 失效
公开(公告)号：JPS55133594A
公开(公告)日：1980-10-17
申请号：JP4102479
申请日：1979-04-06
申请人： FUJITSU LTD
发明人： YOSHINO HARUYUKI , KANEMOTO TSUTOMU , TAKANO SHIGERU , HASHIMOTO SHIYUUICHI
IPC分类号： H05K3/32 , H01L23/32

15. 发明专利

JPS55117373A SUBSCRIBER CIRCUIT 失效
公开(公告)号：JPS55117373A
公开(公告)日：1980-09-09
申请号：JP2428779
申请日：1979-03-02
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , NIPPON ELECTRIC CO , HITACHI LTD
发明人： YOSHINO HARUYUKI , HAGISHIMA KOUICHI , KOMORI ATSUSHI , OONO MASAHIKO , IRIBE SHINICHI
IPC分类号： H04M19/00
摘要： PURPOSE:To reduce the effect of the AC inductive noise by inserting two units of tuning circuits into the side of the subscriber's line of the talking current supply circuit which features the low and high input impedance to the DC and AC respectively. CONSTITUTION:Subscriber circuit 1 forms the inductance circuit changed into the electron centering on transistor Q0, and the input impedance is lowered and heightened to the DC and AC each. At the same time, the input impedance of matching circuit 7 is heightened to the DC and then mathced to the aural signal. And the connection is secured between the outputs of tuning circuits 8 and 9 which give the answer only to the commercial power source frequency, and the connection point is earthed. Then the impedance of circuits 8 and 9 are minimized at the tuning time to be ignored to the line impedance between the AC induction point and point A. As a result, the AC inductive noise which is induced at the optional point of the line and in the in-phase mode is earthed via circuits 8 and 9.

16. 发明专利

JPS55115769A CURRENT SUPPLY CIRCUIT 失效
公开(公告)号：JPS55115769A
公开(公告)日：1980-09-05
申请号：JP2255479
申请日：1979-03-01
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE , NIPPON ELECTRIC CO , HITACHI LTD , FUJITSU LTD
发明人： TAWARA TOSHIYUKI , OIKAWA YOSHINORI , HASEGAWA KOUICHI , TOKUNAGA MICHIO , YOSHINO HARUYUKI
IPC分类号： H04M19/00
摘要： PURPOSE:To increase the transmission characteristics, by making the voltage between the collector and emitter of two transistors for current amplification as a given voltage independently of the length of subscriber line and making common the Zener diode regulating the value at the ground circuit and the power supply side. CONSTITUTION:When current is supplied to the subscriber terminal 5 via the subscriber line 4 in a telephone exchanger, the transistors TrQ00 and Q10 performs current amplification. The voltage between the emitter and collector of TrQ00, Q10 and the capacitor Co to increase the AC impedance viewed from the terminals a and b are specified to a given value independntly of the length of subscriber line. For example, the Zener diode Do is commonly used for the ground circuit and the power supply side circuit. Further, the impedance to ground of the current supply circuit is lowered to in-phase noise caused on the subscriber line 4 and the circuit is made strong to power supply noise caused on the power supply Vc. As a reslut, small size, light weight and circuit integration can be made and the transmission characteristics can easily be improved.

17. 发明专利

JPS5432088A OPTICAL COUPLER 失效
公开(公告)号：JPS5432088A
公开(公告)日：1979-03-09
申请号：JP9806077
申请日：1977-08-16
申请人： FUJITSU LTD
发明人： YOSHINO HARUYUKI , TAKANO SHIGERU , OBARA SHINICHIROU , NOMURA AKIO
IPC分类号： H01L31/12
摘要： PURPOSE:To shorten the cut-off time for the optical coupler which contains the luminous element and the photo Darlington circuit.

18. 发明专利

JPS5412507A MF SIGNAL RECEIVING SYSTEM 失效
公开(公告)号：JPS5412507A
公开(公告)日：1979-01-30
申请号：JP7836377
申请日：1977-06-29
申请人： FUJITSU LTD
发明人： YOSHINO HARUYUKI , GOTOU SHINJI , NAITOU WATARU , OKAZAKI HIDEO
IPC分类号： H04Q1/45 , H04L27/26 , H04Q1/453
摘要： PURPOSE:To omit the BPF for each frequency by using LPF and HPF in combination, and thus to enhance the economical properties as well as to enable the LSI formation.

19. 发明专利

JPS54816A SIGNAL DISTRIBUTION SYSTEM 失效
公开(公告)号：JPS54816A
公开(公告)日：1979-01-06
申请号：JP6605377
申请日：1977-06-03
申请人： FUJITSU LTD
发明人： IZAWA EIICHI , IGI YOUZOU , YOSHINO HARUYUKI , OKAZAKI HIDEO
IPC分类号： H04N5/00
摘要： PURPOSE:To insure a reception of a proper signal at all times for each subscriber through a simple constitution by connecting vertically the normal distribution circuit in plural steps which features a distribution coefficient suited for practical use.

20. 发明专利

JPS6394797A REMOTE SUBSCRIBER ACCOMMODATING EQUIPMENT 失效
公开(公告)号：JPS6394797A
公开(公告)日：1988-04-25
申请号：JP23990886
申请日：1986-10-08
申请人： FUJITSU LTD
发明人： YOSHINO HARUYUKI , MATSUMOTO YUZO
IPC分类号： H04Q3/60
摘要： PURPOSE:To accommodate a comparatively small number of remote subscribers in a digital exchange economically by locating a remote subscriber equipment on a remote location, connecting a telephone set by a subscriber line of a short distance and connecting it to a digital exchange by a multiplex transmission line. CONSTITUTION:A remote subscriber accommodating equipment 22 is arranged near plural telephone sets 1 at a remote location and the telephone sets 1 are accommodated in each subscriber circuit 3 in the remote subscriber accommodating equipment 22 via a subscriber line 12 within a prescribed distance 12. A voice signal subjected to digital coding sent/received from and to a digital exchange network by the subscriber circuit 3 is subjected to time division multiplex by a multiplexer 100 and sent via a multiplex transmission line 30 synchronized by synchronizing devices 27, 28. Moreover, a call signal sent from the subscriber circuit 3 to each telephone set 1 is supplied from a signal repeater 23 based on an instruction transmitted from the digital exchange. Moreover, the test of the subscriber line 12 including the telephone set 1 is executed by a test repeater 24 based on an instruction sent from the digital exchange.

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